(a) The county agency responsible for postrelease supervision, as established by the county board of supervisors pursuant to subdivision (a) of Section 3451, shall maintain postrelease supervision over a person under postrelease supervision pursuant to this title until one of the following events occurs:
(1) The person has been subject to postrelease supervision pursuant to this title for three years at which time the offender shall be immediately discharged from postrelease supervision.
(2) Any person on postrelease supervision for six consecutive months with no violations of his or her conditions of postrelease supervision that result in a custodial sanction
may be considered for immediate discharge by the supervising county.
(3) The person who has been on postrelease supervision continuously for one year with no violations of his or her conditions of postrelease supervision that result in a custodial sanction shall be discharged from supervision within 30 days.
(4) Jurisdiction over the person has been terminated by operation of law.
(5) Jurisdiction is transferred to another supervising county agency.
(6) Jurisdiction is terminated by the revocation hearing officer upon a petition to revoke and terminate supervision by the supervising county agency.
(b) Time during which a person on postrelease supervision is suspended because the person has
absconded shall not be credited toward any period of postrelease supervision.